Maybe one way would be to freeze the particles when they collide with the surface. Freeze-script:http://resources.realflow.com/search.ph ... rch=freezeThe particles would then rather display the behavior of heavy snow, not sand, but also in the posted youtube video there is not much rolling motion of the single particles.

I think it is good in a setup like now, the sugar forming a solid pile, at some distance to the camera. If the camera moves closer, it would look more realistic if the grains rolled a little more on the surface and the tip of the pile may collapse under its own weight.